We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Robertshaw 2374-502 conduit pressure switch stainless steel box with screw terminals

Robertshaw

Robertshaw 2374-502 Conduit Pressure Switch .05-12.0

SKU CH-BGH6-M2W1F

Air pressure switch with conduit housing for HVAC and air filtration systems, adjustable from 0.05 to 12.0 inches water column

  • Product typeCable Ties
  • Overall length6.7
  • Precise pressure control from 0.05 to 12.0 in wc
  • SPDT contact handles 5 A at 120–277 V AC or 28 V DC
  • Stainless-steel conduit box protects switch in harsh HVAC environments
  • Includes adjustment tool and mounting hardware for fast installation
  • Suits air filtration, furnace control and humidity management systems

Robertshaw 2374-502 Pressure Switch

The Robertshaw 2374-502 is a conduit-box pressure switch designed for air-filtration, furnace-control and humidity-detection circuits in commercial and residential HVAC systems. It provides SPDT contact action with a field-adjustable range of .05 to 12.0 in wc and includes the adjustment tool and mounting hardware.

Sustained-load behaviour

Rated for 5 A at 120 to 277 V AC and 5 A at 28 V DC, the switch handles continuous pilot-duty loads of 1 A at 120 VA without derating. The maximum differential setting of .8 in wc remains stable across the operating voltage range of 120 V AC, 277 V AC and 28 V DC.

Build quality and connections

A stainless-steel conduit enclosure protects the mechanism from moisture and debris in duct-mounted installations. Screw-terminal wiring ensures secure, vibration-resistant connections for permanent HVAC control panels. The switch is not suited for applications requiring higher current ratings or non-conduit mounting styles.

How it compares

Measured against everything we stock in Electrical Conduit & Fittings, at today’s prices. Recalculated every night.

Price $35.99
Pricier than about 55% of the 1,290 comparable items (median $28.99).

Specifications

Product
Brand nameROBERTSHAW
Product typeCable Ties

Questions about this item

How much power does the Robertshaw 2374-502 draw when it runs continuously in an HVAC system?

The switch itself consumes negligible power; its contacts are rated for 5 A at 120 to 277 V AC and 5 A at 28 V DC, plus 1 A pilot duty at 120 VA.

What wiring and mounting items must I already have to install this pressure switch?

You need screw-terminal compatible wire, a 120 V AC, 277 V AC or 28 V DC supply, and a surface to mount the stainless-steel conduit box; the included adjustment tool and mounting hardware cover the rest.

Will the 0.8 in wc differential setting work with my older furnace controller?

Yes, the SPDT contacts and the 0.8 in wc maximum differential are compatible with legacy controllers that accept a dry-contact pressure signal at the listed voltage ratings.

More in Electrical Conduit & Fittings

Similar items